Preheat oven to 450° F. If oven is in use at a different temperature, wait until food being cooked is finished, raise the heat and roast the asparagus so that it can be served immediately--it will only take about 10 minutes.

Wash asparagus and trim off tough ends. Put asparagus on baking sheet and drizzle with olive oil (rub it on with your hands, or stir the spears around a bit to get them coated with oil). Salt lightly. Roast until just barely tender, 8-15 minutes, depending on the thickness of the spears.